Martian Rocks

The mean distance between the Earth and Mars is approximately of 78,300,000 km, that is, roughly half the distance from the Earth to the Sun. As compared to the Moon, which is some 380,000 km away, Mars is at appr. 200 times the distance. Among the 27000 meteorites known on earth to date, only a few dozenswere torn off on the surface of Mars by violent impacts.